During the late 1800s, Hermann Ebbinghaus memorized long lists of nonsense syllables (such as gek, bof, or jeh) and tested his recall over varying time delays. According to his results, when did the greatest amount of forgetting occur?

Forgetting curve

Explanation:

Ebbinghaus invented the forgetting curve by using different ways of savings at various time intervals.  Ebbinghaus modern memory research began by using meaningless strings of letters to study the capacity of our memory system. The amount of previously saved letters decreases rapidly, but then reaches a plateau after which a decrease in percentage savings is minimal. We start by forgetting rapidly without practice and then at a certain point forgetting occurs a much lesser rate. With practice, the forgetting curve would look different.

what's this it's not giving you what have to do.